<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box {
            width: 200px;
            height: 200px;
            background-color: plum;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
         
        .h1,
        .h2,
        .h3 {
            width: 30px;
            height: 30px;
            background-color: aqua;
            border-radius: 50%;
        }

        .h22{
            display: flex;
            justify-content: center;
        }
        .h33{
            display: flex;
            justify-content: flex-end;
        }
    </style>
</head>

<body>
    <div class="box">
        <div class="h11">
            <div class="h1"></div>
        </div>
        <div class="h22">
            <div class="h2"></div>
        </div>
        <div class="h33">
            <div class="h3"></div>
        </div>


    </div>
</body>

</html>